Question 1

The SI unit used to measure the amount of radiation absorbed by a gram of material is called the ________.

Accepted Answer

A) gray 
B) sievert 
C) curie 
D) rem 
E) Bq

Question 2

For  Sr,there are ________.

Accepted Answer

A) 85 protons and 38 neutrons 
B) 47 protons and 38 neutrons 
C) 38 protons and 47 neutrons 
D) 38 protons and 85 neutrons 
E) 85 protons and 47 neutrons

Question 3

Which is not a way to minimize your exposure to radiation?

Accepted Answer

A) wearing a lead apron 
B) keeping a good distance 
C) standing behind a thick concrete wall 
D) wearing lead-lined gloves 
E) staying a longer time

Question 4

Radium-226 decays by alpha emission to ________.

Accepted Answer

A) barium-131 
B) cobalt-60 
C) carbon-14 
D) polonium-218 
E) radon-222

Question 5

The process in which a nucleus spontaneously breaks down by emitting radiation is known as ________.

Accepted Answer

A) transformation 
B) translation 
C) fusion 
D) a chain reaction 
E) radioactive decay

Question 6

Nuclear fission as used in nuclear power plants produces radioactive waste with long half-lives.

Accepted Answer

A) True 
 B)False

Question 7

Iodine 131 has a half-life of 8.0 days.An I-131 sample has an initial activity of 32 mCi.What is the activity after 24 days?

Accepted Answer

A) 96 mCi 
B) 16.mCi 
C) 8.0 mCi 
D) 4.0 mCi 
E) 2.0 mCi

Question 8

Irradiation of food for preservation is usually carried out using gamma irradiation.

Accepted Answer

A) True 
 B)False

Question 9

The symbol  e is a symbol used for a(n)________.

Accepted Answer

A) positron 
B) neutron 
C) gamma ray 
D) beta particle 
E) proton

Question 10

An imaging technique that detects the energy absorbed by hydrogen atoms in a magnetic field is known as ________.

Accepted Answer

A) positron emission tomography (PET) 
B) computed tomography (CT) 
C) magnetic resonance imaging (MRI) 
D) radioactive tracer study 
E) supermagnetic tomography (SMT)

Question 11

One type of radiation that is not used for medical procedures is the cosmic ray.

Accepted Answer

A) True 
 B)False

Question 12

The nuclear symbol that completes the equation is a(n)________.  Fe + ? →  Fe

Accepted Answer

A) proton 
B) neutron 
C) gamma ray 
D) beta particle 
E) alpha particle

Question 13

A patient receives 4 ×  mrad of iodine-131,which emits β-particles.If the factor that adjusts for biological damage is 1 for β-particles,how many rems did the patient receive?

Accepted Answer

A) 4 
B) 0.4 
C) 0.3 
D) 2 
E) 40

Question 14

A sample of I-131 decays from 12 microcuries to 3.0 microcuries in 16 days.What is the half-life of I-131?

Accepted Answer

A) 16 days 
B) 8.0 days 
C) 32 days 
D) 64 days 
E) 4.0 days

Question 15

Iron-59 has a half-life of 44 days.A radioactive sample has an activity of 0.64 mBq.What is the activity of the sample after 88 days?

Accepted Answer

A) 1.28 mBq 
B) 0.64 mBq 
C) 0.32 mBq 
D) 0.16 mBq 
E) 0080 mBq

Question 16

If a neutron is lost from a nucleus,the atomic number ________.

Accepted Answer

The answer of If a neutron is lost from a...

Question 17

The correct symbol for hydrogen-3 is  He.

Accepted Answer

A) True 
 B)False

Question 18

What is the radioactive particle released in the following nuclear equation?  W →  Hf + ?

Accepted Answer

A) alpha particle 
B) beta particle 
C) gamma ray 
D) proton 
E) neutron

Question 19

The nuclear symbol that completes the equation is a(n)________.  N →  C + ?

Accepted Answer

A) proton 
B) neutron 
C) positron 
D) beta particle 
E) alpha particle

Question 20

X-rays are emitted during MRI scans.

Accepted Answer

A) True 
 B)False

Exam 5: Nuclear Chemistry

The SI unit used to measure the amount of radiation absorbed by a gram of material is called the ________.

For Sr,there are ________.

Which is not a way to minimize your exposure to radiation?

Radium-226 decays by alpha emission to ________.

The process in which a nucleus spontaneously breaks down by emitting radiation is known as ________.

Nuclear fission as used in nuclear power plants produces radioactive waste with long half-lives.

Iodine 131 has a half-life of 8.0 days.An I-131 sample has an initial activity of 32 mCi.What is the activity after 24 days?

Irradiation of food for preservation is usually carried out using gamma irradiation.

The symbol e is a symbol used for a(n) ________.

An imaging technique that detects the energy absorbed by hydrogen atoms in a magnetic field is known as ________.

One type of radiation that is not used for medical procedures is the cosmic ray.

The nuclear symbol that completes the equation is a(n) ________. Fe + ? → Fe

A patient receives 4 × mrad of iodine-131,which emits β-particles.If the factor that adjusts for biological damage is 1 for β-particles,how many rems did the patient receive?

A sample of I-131 decays from 12 microcuries to 3.0 microcuries in 16 days.What is the half-life of I-131?

Iron-59 has a half-life of 44 days.A radioactive sample has an activity of 0.64 mBq.What is the activity of the sample after 88 days?

If a neutron is lost from a nucleus,the atomic number ________.

The correct symbol for hydrogen-3 is He.

What is the radioactive particle released in the following nuclear equation? W → Hf + ?

The nuclear symbol that completes the equation is a(n) ________. N → C + ?

X-rays are emitted during MRI scans.